SWPGETSTR() / SWPGETSTRBAS()  Retrieve string sent from child process via SWPSETSTR()
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 Function : Retrieve string sent from child process via SWPSETSTR()

 Syntax   : cString = SWPGETSTR()

 Return   : A string

 SWPGETSTR() is used within the parent program to retrieve the string set by
 the child program.

 Example:

    // Parent program
    SWPSETPID("PARENT")
    SWPRUNCMD("child",0,"","")
    string = SWPGETSTR()
    ? "The string returned is :", string         // 'Hello'
    * eof parent
    
    // Child program
    if SWPGETPID("PARENT")
       SWPSETSTR("PARENT","Hello")
    endif
    quit
    * eof child